u-case samples

ricardo.rb

require 'pp'

require 'bundler/inline'

gemfile do
  source 'https://rubygems.org'
  gem 'pry-byebug'
  gem 'awesome_print'
  gem 'activesupport', require: 'active_support/all'
  gem 'activemodel'
  gem 'u-case', '~> 4.2.1', require: 'u-case/with_activemodel_validation'
end

class CreateUser1 < Micro::Case
  attributes :name, :email

  def call!
    normalize_attributes
      .then(apply(:validate_attributes))
      .then(apply(:create_record))
  end

  private

    def normalize_attributes
      Success result: {
        name: String(name).capitalize,
        email: String(email).strip.downcase
      }
    end

    def validate_attributes(name:, email:, **)
      return Success() if name.present? && email.include?('@')

      Failure()
    end

    def create_record(name:, email:, **)
      Success result: {
        user: "user was created (name: #{name}, email: #{email})"
      }
    end
end

class CreateUser2 < Micro::Case
  attribute :name, default: -> value { String(value).capitalize }
  attribute :email, default: -> value { String(value).strip.downcase }

  def call!
    validate_attributes
      .then(apply(:create_record))
  end

  private

    def validate_attributes
      return Success() if name.present? && email.include?('@')

      Failure()
    end

    def create_record
      Success result: {
        user: "user was created (name: #{name}, email: #{email})"
      }
    end
end

class CreateUser3 < Micro::Case
  attribute :name, {
    default: -> value { String(value).capitalize },
    validates: { presence: true }
  }

  attribute :email, {
    default: -> value { String(value).strip.downcase },
    validates: { format: { with: /@/ } }
  }

  def call!
    Success result: {
      user: "user was created (name: #{name}, email: #{email})"
    }
  end
end

result1 = CreateUser1.call(name: 'ricardo', email: '   [email protected]  ')

result2 = CreateUser2.call(name: 'ricardo', email: '   [email protected]  ')

result3 = CreateUser3.call(name: 'ricardo', email: '   [email protected]  ')

pry